document.write( "Question 398294: The class president prepared juice for the class. She prepared 5 liters of juice that was 3 parts pure juice and 7 parts water. This was too sweet. How many liters of water should she add so that the concentration is reduced to 25% and the sweetness is improved? \n" ); document.write( "
Algebra.Com's Answer #282270 by lwsshak3(11628)\"\" \"About 
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let x=amt of water to add to get a 25% concentration
\n" ); document.write( "current concentration:
\n" ); document.write( "liters of juice = .3*5 =1.5 liters
\n" ); document.write( "liters of water = .7*5 =3.5 liters\r
\n" ); document.write( "\n" ); document.write( "new 25% concentration:
\n" ); document.write( "1.5/(1.5+3.5+x)=.25=1/4
\n" ); document.write( "5+x=6
\n" ); document.write( "x=1
\n" ); document.write( "ans:1 liter of water must be added to reduce the concentration of juice to 25%
\n" ); document.write( "
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